A337939 - cp's OEIS frontend

A337939 Irregular triangle T(n, m) read by rows: row n gives the distinct length ratios diagonal/side of regular n-gons, DSR(n, k), for n >= 2, k = 1, 2, ..., floor(n/2), expressed by the coefficients in the power basis of the Galois group Gal(Q(rho(n))/Q), where rho(n) = 2*cos(Pi/n), for n >= 2. T(1, 1) is set to 1.

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	0
9	1
10	1
11	0
12	1
13	2
14	1
15	0
16	1
17	-1
18	0
19	1
20	1
21	0
22	1
23	-1
24	0
25	1
26	0
27	-2
28	0
29	1
30	1
31	0
32	1
33	-1
34	0
35	1
36	1
37	1
38	1
39	0
40	1
41	-1
42	0
43	1
44	0
45	-2
46	0
47	1
48	-4
49	0
50	2
51	1
52	0
53	1
54	-1
55	0
56	1
57	0
58	-2
59	0
60	1
61	1
62	0
63	-3
64	0
65	1
66	1
67	0
68	1
69	-1
70	0
71	1
72	0
73	-2
74	0
75	1
76	0
77	0
78	1
79	0
80	2

[1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, -1, 0, 1, 1, 0, 1, -1, 0, 1, 0, -2, 0, 1, 1, 0, 1, -1, 0, 1, 1, 1, 1, 0, 1, -1, 0, 1, 0, -2, 0, 1, -4, 0, 2, 1, 0, 1, -1, 0, 1, 0, -2, 0, 1, 1, 0, -3, 0, 1, 1, 0, 1, -1, 0, 1, 0, -2, 0, 1, 0, 0, 1, 0, 2]

cp's OEIS Frontend

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	0
9	1
10	1
11	0
12	1
13	2
14	1
15	0
16	1
17	-1
18	0
19	1
20	1
21	0
22	1
23	-1
24	0
25	1
26	0
27	-2
28	0
29	1
30	1
31	0
32	1
33	-1
34	0
35	1
36	1
37	1
38	1
39	0
40	1
41	-1
42	0
43	1
44	0
45	-2
46	0
47	1
48	-4
49	0
50	2
51	1
52	0
53	1
54	-1
55	0
56	1
57	0
58	-2
59	0
60	1
61	1
62	0
63	-3
64	0
65	1
66	1
67	0
68	1
69	-1
70	0
71	1
72	0
73	-2
74	0
75	1
76	0
77	0
78	1
79	0
80	2

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	0
9	1
10	1
11	0
12	1
13	2
14	1
15	0
16	1
17	-1
18	0
19	1
20	1
21	0
22	1
23	-1
24	0
25	1
26	0
27	-2
28	0
29	1
30	1
31	0
32	1
33	-1
34	0
35	1
36	1
37	1
38	1
39	0
40	1
41	-1
42	0
43	1
44	0
45	-2
46	0
47	1
48	-4
49	0
50	2
51	1
52	0
53	1
54	-1
55	0
56	1
57	0
58	-2
59	0
60	1
61	1
62	0
63	-3
64	0
65	1
66	1
67	0
68	1
69	-1
70	0
71	1
72	0
73	-2
74	0
75	1
76	0
77	0
78	1
79	0
80	2

n	a(n)
1	1
2	1
3	1
4	1
5	0
6	1
7	1
8	0
9	1
10	1
11	0
12	1
13	2
14	1
15	0
16	1
17	-1
18	0
19	1
20	1
21	0
22	1
23	-1
24	0
25	1
26	0
27	-2
28	0
29	1
30	1
31	0
32	1
33	-1
34	0
35	1
36	1
37	1
38	1
39	0
40	1
41	-1
42	0
43	1
44	0
45	-2
46	0
47	1
48	-4
49	0
50	2
51	1
52	0
53	1
54	-1
55	0
56	1
57	0
58	-2
59	0
60	1
61	1
62	0
63	-3
64	0
65	1
66	1
67	0
68	1
69	-1
70	0
71	1
72	0
73	-2
74	0
75	1
76	0
77	0
78	1
79	0
80	2